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It is known that a (x1, Y2) and B (X2, Y2) are on the function image of y = 6 / X if x1x2 = - 3, y2y2y2=_____
y2y2= -12
It is known that there are two points a (x1, Y1), B (X2, Y2) on the image with inverse scale function y = - 1 / x, and x1
Choose D because when the image is in the second quadrant, that is, xy1, when the image is in the fourth quadrant, that is, x > 0, Y2 > Y1, and X10, Y1 > Y2
All the points (x1, Y1), (x2y2) are on the image with inverse scale function y = 1 / x, and X1 > x2. Compare the sizes of Y1 and Y2
Draw an image
xy=1
x1y1=1
x2y2=1
Then x1y1 = x2y2
x1/x2=y2/y1>1
∴y2>y1
RELATED INFORMATIONS
- 1. There are two points (x1, Y1) and (X2, Y2) on the image with inverse scale function y = K + 1 of X, if x1
- 2. ① Given that points a (x1, Y1) and B (X2, Y2) are on the image with inverse scale function y = 4 / x, if X1 > X2, try to compare the sizes of Y1 and Y2 ② The inverse scale function y = K / X (K ≠ 0) is known. When x ＞ 0, y increases with the increase of X. the quadrant of the image of the first-order function y = kx-k is calculated
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- 4. If there are three points (- 4, Y1), (- 5, Y2), (- 6, Y3) on the parabola y = x2-4x + m, then the size relation of Y1, Y2, Y3 is () A. Y1 ＞ Y2 ＞ y3b. Y1 ＜ Y2 ＜ y3c. Y1 ＞ Y3 ＞ Y2D
- 5. It is known that the images of the linear functions Y1 = 2x + A and y2 = - x + B pass through the points a [- 2,0], and intersect with the Y axis at two points B.C It is known that the images of the first-order functions Y1 = 2x + A and y2 = - x + B pass through the points a [- 2,0], and intersect with the Y axis at two points B.C. (1) find the values of a and B; (2) draw the images of the two first-order functions in the same plane rectangular coordinate system; (3) find the area of △ ABC
- 6. Given the function y = (M & # 178; - M) x & # 178; + MX + (M + 1) (M is a constant), when m is a value, 1. The function is a linear function 2. The function is a quadratic function
- 7. The image of the quadratic function Y1 = AX2 + BX + C and y2 = KX + B intersects in the x value range of a (- 2,4) B (8,2) which makes Y1 > Y2 hold Before 22:20 Before 22:30
- 8. It is known that there are three points a (x1, Y1) and B (X2, Y2) on the image of quadratic function y = - 3x ^ 2 + 6x + K. if | x1-1 | < | x2-1 |, then the corresponding function values Y1 and Y2 have the size relationship
- 9. Find the maximum value of the quadratic function y = - X's Square - 4x + 4 in - t greater than or equal to x less than or equal to - t + 2 (t is a constant)
- 10. When x is equal to, the quadratic function y is negative, and the square of X has the maximum value
- 11. It is known that a (x1, Y1), B (X2, Y2) are all on the image of y = 6 / X. if x1x2 = - 3, then the value of y1y2 is————
- 12. The known points a (x1y1), B (x2y2) C (x3y3) are all on the image with inverse scale function y = - 4 / X And x1 ＜ 0 ＜ x2 ＜ X3 1. Draw the image of this function and mark the position of ABC. 2. According to the image, compare the sizes of Y1, Y2 and Y3
- 13. If the image with positive scale function y = 2mx passes through a (x1, Y1) and B (X2, Y2), then
- 14. As shown in the figure, the straight line y = KX + B passing through the point F (0,1) intersects the parabola y = 1 / 4x ^ 2 at two points m (x1, Y1) and n (X2, Y2) (where X1 < 0, x2)
- 15. Given that point a (x, y) moves on the parabola y = 4x, find the minimum value of Z = x + Y / 2 + 3 It's the 9th question of 42 sides of 1-1 elective course of famous teacher No.1!
- 16. As shown in the figure, the straight line y = - 2 / 3x + 12 intersects the x-axis and y-axis at two points B and a respectively, and the vertical bisector of line AB intersects the x-axis and y-axis at two points c and D (1) respectively A. (2) calculate the area of △ ACD
- 17. As shown in the figure, the straight line y = -43x + 8 intersects the x-axis and y-axis at two points a and B respectively, and the vertical bisector of line AB intersects the x-axis and y-axis at two points c and D respectively. (1) calculate the coordinates of point C; (2) calculate the area of △ BCD
- 18. A straight line with an inclination angle of quarter passes through the focus of the parabola y = 8x, and intersects with the parabola at two points a and B. the length of line AB is calculated
- 19. Through the focus F of the parabola, make a straight line not perpendicular to the axis of symmetry, the parabola intersects a and B, and the vertical bisector of line AB intersects the axis of symmetry n
- 20. If the distance from the vertex of the parabola y = x-6x + C-2 to the X axis is 3, then the value of C is a () plus process